Pump-valve



A, S. PARKE. Pump Valve.

Patented Aug.-10, 1880,

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Artnr AMOS S. PARKE, OF BAY CITY, MICHIGAN.

PUM P-VALVE.

SPECIFICATION 'forming part of Letters Patent No. 230,892, dated August 10, 1880.

Application led December 30, 1879.

To all whom it may concern:

Be it known that I, AMOS S. PARKE,ot' Bay City, in the countyof Bay and State of Michigan, have invented certain new and useful I mprovements in Pump-Valves; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings,

which form a part of this specification.

valve, the bottom of which, K, is provided with a centra-l threaded perforation, B, forthe valve-stem C, and perforations D D for the admission of uid. At its upper end the cylinder A is turned down, forming a shoulder, E, above which one or more packing-rings, F, of steel or other suitable spring metal, are couned, said rings being provided with oblique slots Gr which permit them to expand in the WelLtube.

The upper end of the valve-cylinder is closed by a cover, H, having a ange, I, which serves to coniine the packing-rings F upon the cylin- Said cover is also provided with perforations J for the escape oi the Huid' passing through the valve.

The cylinder or body A is provided with grooves L cut as right and left hand screwthreads, at the terminations of which perforaorifices N are made in the sides of the cylinder for the purpose of enabling a small portion of the fluid which is being raised to pass out and pack the space between the valve and welltube. The grooves L serve to retain said iiuid, and also to take up any sand orlgrit which,

Additional owing to the spiral form of the grooves L,

will gradually work out through the perforations M.

At its lower end the cylinder A is turned down to forma shoulder, O, below which a packing-ring, I), of leather or other suitable material, is placed. The lower end of cylinder A has anexterior thread, Q, by which it is screwed into a cylindrical socket, R, having a seat, T, for a valve, S, provided with a recess, U, enabling it to work upon the lower end of the valve-stem C. The socket R also serves to retain in its proper place the packing-ring P.

The valve-stem C extends upward through the valve-body A above the cover H, and is provided with a shoulder, V, which serves to secure the said cover upon the valve-body. A valve, W, closing the pert'orations in cover H, slides upon the valve-stem above said cover, and is confined upon the valve-stem by an annular tlan ge, X, upon the latter. Above flange X the valve-stem is threaded for `the attachment of the piston-rods.

I am aware that water-packing rings consisting simply of circular or annular grooves are old and well known. In such, however, sand and grit has had a tendency to accumulate without any chance ot' escaping until the valve has been withdrawn from the Well-tube, thus increasing the friction and causing wear and injury to the valve. By making the water-packing grooves in spiral form, as by my improvement, any impurities are enabled to work through the said grooves around the body ofthe valve, and tinally out through the perforations M, when they are carried oi with the tluid passing through the valve.

Havingthus described myinvention,I claim and desire to secure by Letters Patent of the United States- 1. The valve-cylinder A, having right and left hand threads or spiral grooves L, and peri'orations M at the terminations ot'said grooves,

as set forth.

2. The combination, with the valve-cylinder A, having bottom K, with threaded perforation B, and detachable cover H, having ange I, of the packing-rings F and the valve-stem O, having shoulder V, which, when said valvestem is in position, serves to retain the cover and packing-rings, as set forth.

3. The herein described improved pumpvalve, consistin g ofthe grooved o vlinderA, having perforations M N, packing-rings Rilanged cover H, having perforations J, valve W, leather-paoking P, socket R, having valve S, and the stem C, having shoulder V and annular flange X, all combined, arranged, and operating subro stantialiy as and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two Witnesses.

AMOS SYLVESTER PARKE.

Witnesses:

D. C. SMALLEY, I. M. CULLIs. 

